target/linux/layerscape/patches-5.4/820-usb-0005-usb-dwc3-add-otg-properties-update.patch

   1 From 504c440dd9c391ed97299a9d4b2e41b3ac3b6211 Mon Sep 17 00:00:00 2001
   2 From: Peter Chen <peter.chen@nxp.com>
   3 Date: Mon, 28 Jan 2019 15:15:11 +0800
   4 Subject: [PATCH] usb: dwc3: add otg properties update
   5
   6 During the USB certification CV9 test, if we report OTG descriptor
   7 to test suite, it will require doing OTG test, but in fact, it does
   8 not support OTG-compliance in dwc3 driver.
   9
  10 Signed-off-by: Peter Chen <peter.chen@nxp.com>
  11 ---
  12  drivers/usb/dwc3/core.c   | 11 +++++++++++
  13  drivers/usb/dwc3/core.h   |  2 ++
  14  drivers/usb/dwc3/gadget.c |  4 ++++
  15  3 files changed, 17 insertions(+)
  16
  17 --- a/drivers/usb/dwc3/core.c
  18 +++ b/drivers/usb/dwc3/core.c
  19 @@ -1260,6 +1260,17 @@ static void dwc3_get_properties(struct d
  20
  21         dwc->maximum_speed = usb_get_maximum_speed(dev);
  22         dwc->dr_mode = usb_get_dr_mode(dev);
  23 +       if (dwc->dr_mode == USB_DR_MODE_OTG) {
  24 +               dwc->otg_caps.otg_rev = 0x0300;
  25 +               dwc->otg_caps.hnp_support = true;
  26 +               dwc->otg_caps.srp_support = true;
  27 +               dwc->otg_caps.adp_support = true;
  28 +
  29 +               /* Update otg capabilities by DT properties */
  30 +               of_usb_update_otg_caps(dev->of_node,
  31 +                                      &dwc->otg_caps);
  32 +       }
  33 +
  34         dwc->hsphy_mode = of_usb_get_phy_mode(dev->of_node);
  35
  36         dwc->sysdev_is_parent = device_property_read_bool(dev,
  37 --- a/drivers/usb/dwc3/core.h
  38 +++ b/drivers/usb/dwc3/core.h
  39 @@ -944,6 +944,7 @@ struct dwc3_scratchpad_array {
  40   * @nr_scratch: number of scratch buffers
  41   * @u1u2: only used on revisions <1.83a for workaround
  42   * @maximum_speed: maximum speed requested (mainly for testing purposes)
  43 + * @otg_caps: the OTG capabilities from hardware point
  44   * @revision: revision register contents
  45   * @version_type: VERSIONTYPE register contents, a sub release of a revision
  46   * @dr_mode: requested mode of operation
  47 @@ -1097,6 +1098,7 @@ struct dwc3 {
  48         u32                     nr_scratch;
  49         u32                     u1u2;
  50         u32                     maximum_speed;
  51 +       struct usb_otg_caps     otg_caps;
  52
  53         /*
  54          * All 3.1 IP version constants are greater than the 3.0 IP
  55 --- a/drivers/usb/dwc3/gadget.c
  56 +++ b/drivers/usb/dwc3/gadget.c
  57 @@ -3376,6 +3376,10 @@ int dwc3_gadget_init(struct dwc3 *dwc)
  58         dwc->gadget.sg_supported        = true;
  59         dwc->gadget.name                = "dwc3-gadget";
  60         dwc->gadget.lpm_capable         = true;
  61 +       dwc->gadget.is_otg              = (dwc->dr_mode == USB_DR_MODE_OTG) &&
  62 +                                         (dwc->otg_caps.hnp_support ||
  63 +                                          dwc->otg_caps.srp_support ||
  64 +                                          dwc->otg_caps.adp_support);
  65
  66         /*
  67          * FIXME We might be setting max_speed to <SUPER, however versions